13.48.210 Water quality.
A. Prohibited Discharges. It is unlawful for any individual, firm or corporation to discharge into the public storm drainage system directly or indirectly any liquid or solid foreign substances of biodegradable or other nature which may cause or tend to cause water pollution, including but not limited to the following items:
Petroleum products including but not limited to oil, gasoline, diesel fuel, grease, fuel oil and heating oil; trash and debris; pet wastes; chemicals; paints; paint chips; steam cleaning wastes; wastes from washing of fresh concrete for cleaning and/or finishing purposes or to expose aggregates; laundry wastes; soaps; pesticides, herbicides or fertilizers; sanitary sewage; heated water; chlorinated water or chlorine; degreasers and/or solvents; bark and other fibrous material; antifreeze or other automotive products; lawn clippings, leaves or branches; animal carcasses; silt, sand, dirt or rock; acids or alkalis; dyes (without prior permission of the drainage utility); construction materials or food waste.
The following categories of non-storm water discharges are prohibited unless the stated conditions are met:
1. Discharges from potable water sources including water line flushing, hyperchlorinated water line flushing, fire hydrant system flushing, and pipeline hydrostatic test water. Planned discharges shall be dechlorinated to a concentration of 0.1 ppm or less, as determined by colorimetric chlorine test kit; pH-adjusted to within the range of 6.5 to 8.5 pH units as determined by use of a calibrated pH meter or narrow range pH indicator paper with a resolution not greater than ± 0.5 standard units; and volumetrically and velocity controlled to prevent resuspension of sediments in the public storm drainage system, as determined by visual inspection.
2. Dechlorinated Swimming Pool Discharges. Discharges shall be dechlorinated to a concentration of 0.1 ppm or less, as determined by colorimetric chlorine test kit; pH-adjusted to within the range of 6.5 to 8.5 pH units as determined by use of a calibrated pH meter or narrow range pH indicator paper with a resolution not greater than ± 0.5 standard units; and volumetrically and velocity controlled to prevent resuspension of sediments in the public storm drainage system, as determined by visual inspection.
3. Street Washing at Active Construction Sites. The entire area of street that is to be washed must be cleaned by sweeping before washing is permitted. Street wash water must be collected and be discharged back onto the construction site or otherwise be prevented from entering the public storm drainage system.
4. Other non-storm water discharges shall be in compliance with the requirements of a storm water pollution prevention plan reviewed by the city, which addresses control of such discharges.
B. Discharge of Pollutants – Liability for Expenses Incurred by the Utility. Any individual, firm or corporation responsible for pollutant discharge into the public storm drainage system who fails to immediately collect, remove, contain, or treat such materials as directed by the city shall be responsible for the necessary expenses incurred by the city in carrying out any pollutant abatement procedures, including the collection, removal, containment, treatment or disposal of such materials.
C. Permissible Discharges. Discharges from the sources listed below shall only be illicit discharges if the public works director determines that the type of discharge, whether singly or in combination with others, is a significant source of water pollution:
Natural uncontaminated groundwater; uncontaminated air conditioning condensation; natural springs; uncontaminated water from crawl space pumps; irrigation runoff from agricultural sources that is commingled with urban storm water; discharges in compliance with a NPDES permit; and discharges from approved footing drains and foundation drains.
D. Exemption. Discharges resulting directly from emergency firefighting activities, but not from activities such as the maintenance or cleaning of firefighting equipment, are exempt from regulation under this section. (Ord. 6283 § 5, 2009; Ord. 6251 § 4, 2009; Ord. 5853 § 1, 2004; Ord. 5212 § 1 (Exh. J), 1999; Ord. 4492 § 4, 1991.)